Thanks for the advice dude. :) I don't think I'm going to follow most of it, but I appreciate you wanting to help all the same.
It's not really about filling air time, for me it's just doing what I enjoy. For example I only watch LP's where the text is being read aloud, because usually I'm flicking between other pages during those parts and I like to hear what's going on. Some people like having it read out, some people don't - I'm okay with that. And shooting the shit and such feels more personal to me. To me a let's play is a social thing, where you get a close experience to being in the same room as a friend while you play a game together. Whenever I play games with friends there are usually jokes, general chat and such untop of the gameplay objective.
I wouldn't watch a Let's Play like the one you want me to be, so I won't act like it. I'd never ever want to listen to a scripted post-production Let's Play for instance. I do what I enjoy, there are many ways to do a let's play and I don't think there is a wrong way - and I don't think "nobody wants to hear" what I have to say, I've already gotten feedback that it's actually something they enjoy.
I'm not dismissing you or anything, I'm genuinely happy you're trying to help, but we may just enjoy different things in our Let's Plays?